Table 1.

Effectiveness of the real-time air disinfection device against E. coli in the air.

Time (min)	No.	V 0 (Cfu/m3)	V t (Cfu/m3)	N t (%)	V o′ (Cfu/m3)	V t′ (Cfu/m3)	K t (%)
30	1	2.70 × 105	1.76 × 105	34.81	2.64 × 105	0	100
	2	2.54 × 105	1.66 × 105	34.65	2.40 × 105	0	100
	3	2.10 × 105	1.40 × 105	33.33	2.10 × 104	0	100

N _t: the natural extinction rate of bacteria in the air; V₀ and V_t: the amount of bacteria in the air at different times before and during the experiment was conducted; V_o′ and V_t′: the amount of bacteria in the air at different times before and during the disinfection process of the experimental group; K_t: the disinfection rate of bacteria in air.